The act a dog performs when it drags it's ass along the carpet, propelling itself forward with it's front legs. This is used as a means of wiping the last bits of shit from it's butthole, leaving your carpet laden with skid marks and shit stains.

Tootie tried to do The Butt last night, but as a means of saving the rug, Deedle put her hand underneath her culo, and was left with nothing more than a shit streak on her palm.